Prince Harry and Prince William may be siblings, but they couldn’t be more different from each other.

According to a royal expert, the way the two royals respond to major life events are also very different, and there’s a reason why this is the case. In the book “Harry: Conversations With the Prince,” royal author Angela Levin said that Prince Harry is more emotional than his older brother, and he also wears his heart on his sleeve.

The royal author also said that Princess Diana played a huge role in how Prince Harry became the man that he is today.

“Although his mother, the late Princess Diana, did her best to make sure he didn’t miss out, it was hard to compete with an older brother destined to be King one day. Harry adored his mother and marveled at how much fun she was… He said he felt safe because a key aim of her life was to ‘protect’ him and William,” she said.

Levin revealed that after several attempts to try to interview Prince Harry, she was finally allowed to do so for only 20 minutes.

“I had seen countless times how inspirational and caring he was with people of all ages and types, especially those who were psychologically damaged. I asked if he was also using these occasions to try to help work through his own mental health issues,” she said.

According to Levin, Prince Harry stayed silent for a while before saying that she was right. Levin and the Duke of Sussex had a wide-ranging conversation that lasts much longer than the initially 20 minutes that was agreed upon.

In related news, Prince Harry and Prince William are reportedly still at odds with each other. After separating their households a couple of months ago, the siblings announced that they will also be separating their charities.

Prince Harry will continue to work with his wife, Meghan Markle. Prince William will also work alongside Kate Middleton.

Prince William and Prince Harry
Prince William and Prince Harry attend the opening of the Greenhouse Sports Centre on April 26, 2018, in London. Getty Images/Toby Melville